Incidental Mutation 'R4639:Ddx21'
ID 350836
Institutional Source Beutler Lab
Gene Symbol Ddx21
Ensembl Gene ENSMUSG00000020075
Gene Name DExD box helicase 21
Synonyms RH II/Gu, D10Wsu42e, RH-II/Gualpha, DEAD (Asp-Glu-Ala-Asp) box polypeptide 21, D10Ertd645e
MMRRC Submission 041901-MU
Accession Numbers
Essential gene? Essential (E-score: 1.000) question?
Stock # R4639 (G1)
Quality Score 225
Status Validated
Chromosome 10
Chromosomal Location 62416030-62438060 bp(-) (GRCm39)
Type of Mutation nonsense
DNA Base Change (assembly) A to T at 62427616 bp (GRCm39)
Zygosity Heterozygous
Amino Acid Change Leucine to Stop codon at position 429 (L429*)
Ref Sequence ENSEMBL: ENSMUSP00000042691 (fasta)
Gene Model predicted gene model for transcript(s): [ENSMUST00000045866]
AlphaFold Q9JIK5
PDB Structure Gu_alpha_helicase [X-RAY DIFFRACTION]
Predicted Effect probably null
Transcript: ENSMUST00000045866
AA Change: L429*
SMART Domains Protein: ENSMUSP00000042691
Gene: ENSMUSG00000020075
AA Change: L429*

DomainStartEndE-ValueType
low complexity region 24 45 N/A INTRINSIC
low complexity region 87 98 N/A INTRINSIC
low complexity region 107 139 N/A INTRINSIC
internal_repeat_1 140 160 2.96e-8 PROSPERO
low complexity region 162 171 N/A INTRINSIC
low complexity region 199 208 N/A INTRINSIC
internal_repeat_1 214 234 2.96e-8 PROSPERO
DEXDc 277 484 2.76e-56 SMART
HELICc 524 604 1.55e-27 SMART
low complexity region 682 688 N/A INTRINSIC
Pfam:GUCT 692 787 1.6e-33 PFAM
low complexity region 827 843 N/A INTRINSIC
Predicted Effect noncoding transcript
Transcript: ENSMUST00000218393
Predicted Effect noncoding transcript
Transcript: ENSMUST00000220060
Meta Mutation Damage Score 0.9755 question?
Coding Region Coverage
  • 1x: 99.3%
  • 3x: 98.6%
  • 10x: 97.2%
  • 20x: 95.1%
Validation Efficiency 97% (37/38)
MGI Phenotype FUNCTION: [Summary is not available for the mouse gene. This summary is for the human ortholog.] DEAD box proteins, characterized by the conserved motif Asp-Glu-Ala-Asp (DEAD), are putative RNA helicases. They are implicated in a number of cellular processes involving alteration of RNA secondary structure such as translation initiation, nuclear and mitochondrial splicing, and ribosome and spliceosome assembly. Based on their distribution patterns, some members of this family are believed to be involved in embryogenesis, spermatogenesis, and cellular growth and division. This gene encodes a DEAD box protein, which is an antigen recognized by autoimmune antibodies from a patient with watermelon stomach disease. This protein unwinds double-stranded RNA, folds single-stranded RNA, and may play important roles in ribosomal RNA biogenesis, RNA editing, RNA transport, and general transcription. [provided by RefSeq, Jul 2008]
PHENOTYPE: Mice homozygous for an ENU-induced allele exhibit embryonic lethality. [provided by MGI curators]
Allele List at MGI
Other mutations in this stock
Total: 37 list
GeneRefVarChr/LocMutationPredicted EffectZygosity
Adamts16 G A 13: 70,927,637 (GRCm39) probably benign Het
Atad2b A C 12: 5,068,053 (GRCm39) H1017P probably damaging Het
Atp8a1 A T 5: 67,813,317 (GRCm39) V943D probably benign Het
Babam1 C T 8: 71,856,951 (GRCm39) A304V probably damaging Het
Cdk5rap2 G T 4: 70,220,413 (GRCm39) A584D probably damaging Het
Dsp T C 13: 38,380,760 (GRCm39) Y2502H probably damaging Het
Eaf1 G A 14: 31,226,333 (GRCm39) D206N probably benign Het
Fam43b T A 4: 138,123,278 (GRCm39) D14V possibly damaging Het
Fanca T A 8: 124,044,889 (GRCm39) K34I probably damaging Het
Fzd4 T C 7: 89,056,525 (GRCm39) Y191H probably benign Het
Gas2l3 CACTCGTCATACT CACT 10: 89,266,820 (GRCm39) probably benign Het
Gm10479 A G 12: 20,483,343 (GRCm39) T55A probably damaging Het
Gsr T G 8: 34,187,284 (GRCm39) I488M probably damaging Het
Mrs2 A G 13: 25,185,767 (GRCm39) I135T probably damaging Het
Myh13 T C 11: 67,232,377 (GRCm39) M517T possibly damaging Het
Naip1 C G 13: 100,580,791 (GRCm39) G152A probably benign Het
Naip5 T A 13: 100,356,338 (GRCm39) E1092D probably benign Het
Nat10 G A 2: 103,565,234 (GRCm39) T449I probably benign Het
Nin A G 12: 70,085,375 (GRCm39) S1619P probably damaging Het
Or14c45 G A 7: 86,175,969 (GRCm39) M1I probably null Het
Or5m9b A G 2: 85,905,923 (GRCm39) I280V probably benign Het
Pcdh15 A G 10: 74,479,439 (GRCm39) T448A probably benign Het
Pcolce2 A G 9: 95,519,930 (GRCm39) probably null Het
Pnp C T 14: 51,188,380 (GRCm39) R207* probably null Het
Ppl A G 16: 4,907,310 (GRCm39) V995A probably damaging Het
Ppp2r2a G A 14: 67,276,406 (GRCm39) T33I probably damaging Het
Pramel20 C T 4: 143,298,467 (GRCm39) R137C probably benign Het
Pyroxd1 C G 6: 142,300,467 (GRCm39) S199* probably null Het
Rgs16 G T 1: 153,617,781 (GRCm39) C97F probably damaging Het
Sacs T A 14: 61,444,717 (GRCm39) D2254E probably benign Het
Slc6a17 T C 3: 107,381,597 (GRCm39) M495V probably benign Het
Svep1 T C 4: 58,082,724 (GRCm39) I1967V probably benign Het
Sympk G T 7: 18,777,385 (GRCm39) R545L possibly damaging Het
Tcp11l2 A G 10: 84,420,800 (GRCm39) D13G probably damaging Het
Vmn1r167 T C 7: 23,205,011 (GRCm39) I2V probably benign Het
Vwa5a T C 9: 38,638,410 (GRCm39) probably null Het
Wdr95 T C 5: 149,505,279 (GRCm39) probably benign Het
Other mutations in Ddx21
AlleleSourceChrCoordTypePredicted EffectPPH Score
IGL00709:Ddx21 APN 10 62,434,181 (GRCm39) nonsense probably null
IGL01144:Ddx21 APN 10 62,434,329 (GRCm39) missense unknown
IGL01655:Ddx21 APN 10 62,423,270 (GRCm39) missense probably damaging 0.98
IGL01694:Ddx21 APN 10 62,434,430 (GRCm39) nonsense probably null
IGL01752:Ddx21 APN 10 62,423,286 (GRCm39) missense probably damaging 1.00
IGL02827:Ddx21 APN 10 62,434,153 (GRCm39) missense probably benign 0.04
IGL03140:Ddx21 APN 10 62,429,850 (GRCm39) missense probably damaging 1.00
IGL03248:Ddx21 APN 10 62,427,769 (GRCm39) missense possibly damaging 0.87
R0131:Ddx21 UTSW 10 62,420,531 (GRCm39) missense possibly damaging 0.96
R0555:Ddx21 UTSW 10 62,423,307 (GRCm39) missense probably damaging 1.00
R1437:Ddx21 UTSW 10 62,434,369 (GRCm39) missense unknown
R1780:Ddx21 UTSW 10 62,429,926 (GRCm39) splice site probably benign
R1875:Ddx21 UTSW 10 62,429,847 (GRCm39) missense probably damaging 1.00
R2696:Ddx21 UTSW 10 62,429,871 (GRCm39) missense possibly damaging 0.93
R4678:Ddx21 UTSW 10 62,429,782 (GRCm39) missense probably benign 0.06
R4767:Ddx21 UTSW 10 62,427,751 (GRCm39) missense probably damaging 1.00
R4799:Ddx21 UTSW 10 62,423,900 (GRCm39) missense probably damaging 0.98
R5145:Ddx21 UTSW 10 62,423,318 (GRCm39) critical splice acceptor site probably null
R5243:Ddx21 UTSW 10 62,437,992 (GRCm39) start codon destroyed probably null 0.02
R6085:Ddx21 UTSW 10 62,429,866 (GRCm39) missense probably damaging 1.00
R6701:Ddx21 UTSW 10 62,426,470 (GRCm39) missense probably damaging 1.00
R7134:Ddx21 UTSW 10 62,427,634 (GRCm39) missense possibly damaging 0.95
R7517:Ddx21 UTSW 10 62,424,569 (GRCm39) missense probably damaging 0.98
R7555:Ddx21 UTSW 10 62,434,022 (GRCm39) missense probably benign 0.03
R7577:Ddx21 UTSW 10 62,426,449 (GRCm39) missense probably benign 0.19
R7704:Ddx21 UTSW 10 62,429,865 (GRCm39) missense probably damaging 1.00
R8902:Ddx21 UTSW 10 62,434,486 (GRCm39) missense probably benign 0.01
R9126:Ddx21 UTSW 10 62,424,479 (GRCm39) missense probably damaging 1.00
R9344:Ddx21 UTSW 10 62,428,825 (GRCm39) missense possibly damaging 0.66
R9412:Ddx21 UTSW 10 62,429,881 (GRCm39) missense possibly damaging 0.94
R9480:Ddx21 UTSW 10 62,434,652 (GRCm39) missense probably benign
Z1177:Ddx21 UTSW 10 62,423,317 (GRCm39) critical splice acceptor site probably null
Predicted Primers PCR Primer
(F):5'- GTGATCAAGCTGGCACAATACG -3'
(R):5'- TTTACAGTTGAACGAATGCGGAG -3'

Sequencing Primer
(F):5'- TCCAAACTTTAGCCAGGTAGTAGTGG -3'
(R):5'- CGAATGCGGAGTGGGATTGATATC -3'
Posted On 2015-10-08